<template>
	<div>
		<div>
			<!-- 顶部滑块 -->
			<div id="slider" class="mui-slider">
				<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
					<div class="mui-scroll">
						<a :class="['mui-control-item',item.id == 0 ? 'mui-active' : '']" v-for="(item,i) in cates" :key="i" @click="getPhotoListByCateId(item.id)">
							{{item.title}}
						</a>
					</div>
				</div>
			</div>
			
			<!-- 图片列表 -->
			<ul class="photo-list">
				<router-link v-for="(item,i) in list" :key="i" :to="'/home/photoinfo/'+item.id" tag="li">
					<img v-lazy="item.img_url">
					<div class="info">
						<h1 class="info-title">
							{{item.title}}
						</h1>
						<div class="info-body">
							{{item.zhaiyao}}
						</div>
					</div>
				</router-link>
			</ul>
		</div>
	</div>
</template>

<script>
	import mui from '../../lib/mui/js/mui.min.js'
	import {Toast} from 'mint-ui'
	
	export default {
		data() {
			return {
				// 数组，所有分类的列表
				cates:[],
				// 所有图片
				list:[]
			};
		},
		created(){
			this.getAllCategory(),
			this.getPhotoListByCateId(0)
		},
		// 如果操作元素，最好在mounted里面，因为这时候的dom元素都是最新的
		mounted(){		//当组件的dom中结构被渲染好并放入页面之后会执行这个钩子函数
				mui('.mui-scroll-wrapper').scroll({
				deceleration: 0.0005
			})
		},
		methods: {
			getAllCategory(){
				// 获取所有图片分类
				this.$http.get('http://www.liulongbin.top:3005/api/getimgcategory').then(result =>{
					if(result.body.status === 0){
						result.body.message.unshift({
							'title':"全部",
							id: 0
						})
						this.cates = result.body.message
					}
				})
			},
			
			getPhotoListByCateId(cateId){
				// 根据 分类id获取图片列表
				this.$http.get('http://www.liulongbin.top:3005/api/getimages/'+cateId).then(result =>{
					if(result.body.status === 0){
						this.list = result.body.message;
					}
					else{
						Toast('加载失败')
					}
				})
			}
		},
	}
</script>

<style lang="less" scoped>
* {
	touch-action: pan-y;
}

.photo-list{
	list-style: none;
	margin: 0;
	padding: 10px;
	padding-bottom: 0px;
	li{
		background-color: pink;
		text-align: center;
		margin-bottom: 10px;
		box-shadow: 0 0 10px #999;
		position: relative;
		img{
			width: 100%;
			vertical-align: top;
		}
		img[lazy="loading"]{
			width: 40px;
			height: 300px;
			margin: auto;
		}
		.info{
			position: absolute;
			left: 0;
			bottom: 0;
			color: white;
			text-align: left;
			background: rgba(0,0,0,0.3);
			max-height: 84px;
			.info-title{
				font-size: 14px;
			}
			.info-body{
				font-size: 13px;
			}
		}
	}
}
</style>
